CN111123133B - Non-contact power battery impedance measuring and charging device - Google Patents
Non-contact power battery impedance measuring and charging device Download PDFInfo
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- CN111123133B CN111123133B CN202010001643.3A CN202010001643A CN111123133B CN 111123133 B CN111123133 B CN 111123133B CN 202010001643 A CN202010001643 A CN 202010001643A CN 111123133 B CN111123133 B CN 111123133B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The invention relates to a non-contact power battery impedance measuring and charging device.A charging relay is connected with a first rectifier filter in series and then is respectively connected with an impedance measuring relay in parallel, the first end of the impedance measuring relay after being connected in parallel is connected with a receiving coil, and the other second end of the impedance measuring relay is connected with a plurality of battery module selection switches; the battery impedance is measured by using the alternating current in the non-contact power battery charging device, and the power battery is heated, so that the battery impedance is measured by using the wireless charging equipment, the current and the voltage for charging the battery can be updated in real time according to the battery impedance measured in real time, and the optimal current and voltage charging is realized; the real-time updating of the power battery parameters can be updated in real time according to the battery impedance measured in real time, and the estimation of the state parameters of the power battery is more accurate. The frequency, the current and the power parameters of the battery alternating current heating can be updated in real time according to the battery impedance measured in real time, the variable frequency heating temperature rise rate is higher, and the control accuracy is high and simple.
Description
Technical Field
The field of low-temperature heating, impedance measurement and charging of power batteries, in particular to a device for impedance measurement, charging and heating of a non-contact power battery.
Background
At present, impedance measurement does not have a device for realizing impedance measurement in a vehicle-mounted environment, and a specific external excitation device is additionally added to an online vehicle in the prior art, for example, in patent application CN109254251, an external excitation signal generation unit generates sinusoidal excitation with a certain frequency, but does not have a vehicle-mounted condition. The process is complicated, the equipment is not flexible, the adaptability is poor, and the requirement of timely updating the parameters of the power battery of the current vehicle cannot be well met;
the other impedance calculation method has the defects of large error and the like due to inaccurate impedance calculation in modeling.
The existing off-board impedance measuring device is mostly based on an electrochemical workstation, battery impedance information can be accurately obtained by adopting an alternating current impedance method, but the device is large in size and is not suitable for measuring on-board impedance.
In the prior art, CN110554327, although a battery charging and discharging step signal utilized at that time during vehicle charging is not externally connected alternating current sinusoidal excitation, the measurement accuracy is not sufficient.
The existing battery preheating technology mainly adopts PTC heating, but the PTC heating has the defects of low heating efficiency, poor uniformity, high potential safety hazard, poor control accuracy, slow heating rate and the like;
the traditional liquid heating can greatly reduce the energy density of the power battery, and meanwhile, the problems of low heating efficiency, low temperature rising rate and the like exist.
Although the latest technology of heating resistors inside batteries in recent years improves the heating rate, the problems of too high control cost, too complex control and the like exist, and the problem of preheating the batteries cannot be effectively solved in a short time by the existing method.
The existing non-contact power battery charging device, such as CN109774504A, converts electromagnetic energy received by the receiving coil into ac power, and then converts the ac power into dc power to charge the power battery.
Disclosure of Invention
No one in the prior art wants to utilize the alternating current in the non-contact power battery charging device, but the invention is just out of the conventional use bias of the prior art; the alternating current in the non-contact power battery charging device is used for measuring the battery impedance and heating the power battery, so that the technical problems in the prior art are solved under the condition that no external equipment is added, and the following effects are realized:
1. the battery impedance is measured by using the wireless charging equipment without externally connecting a separate excitation source, the battery impedance is measured in real time when the vehicle is charged, new equipment is not added, and the cost is not increased.
2. The invention can update the current and the voltage for charging the battery according to the battery impedance measured in time, realizes the charging of the optimal current and voltage, has higher charging efficiency and has less damage to the battery in the charging process.
3. The method can update the power battery parameters according to the battery impedance measured in real time, and realizes more accurate estimation of the power battery state parameters.
4. The invention can update the current frequency and the current power of the battery alternating current heating according to the battery impedance measured in time, and realizes higher temperature rise rate of variable frequency heating and high and simple control accuracy.
Drawings
FIG. 1 is a schematic diagram of a power battery impedance measuring and charging apparatus according to the present invention;
FIG. 2 is a schematic diagram of the power battery impedance measurement, charging and cryogenic heating apparatus of the present invention;
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The power battery comprises a plurality of battery modules;
the invention relates to a non-contact power battery impedance measuring and charging device,
as shown in fig. 1, the parking space comprises a vehicle-mounted end mounted on a vehicle and a parking space end mounted on a parking space;
the parking space end comprises a transmitting device 15, a second topology compensation circuit 14, an inverter 13, a second rectifier filter 12, a second wireless transceiver 11 and a main controller 10;
the second rectifier filter 12 converts the direct current or alternating current input from the external power supply into direct current;
the inverter 13 is arranged between the second topology compensation circuit 14 and the second rectification filter circuit 12; the direct current power supply is used for converting the direct current after rectification and filtration into high-frequency alternating current;
the second topology compensation circuit 14 is between the inverter 13 and the transmitting device 15; the compensation structure can be in various forms such as S/S, LS, PS, PP, LCC and the like.
A transmitter 15, which is a coil wound with litz wire and converts a high-frequency alternating current into a high-frequency alternating magnetic field;
the main controller obtains information such as battery voltage, current, temperature, SOC (system on chip), impedance measured in time and the like, and updates the optimal charging current and the optimal charging voltage of the battery in time according to the impedance information of the battery measured in time, so that the inverter 13 is controlled to control the transmitting device 14, and the power battery is charged with the optimal charging current and the optimal charging voltage;
the vehicle-mounted end comprises an impedance measuring relay 20, a charging relay 21, a first rectifying filter 22, N battery packs 23, a receiving device 16, a first topology compensation circuit 17, a first wireless transceiver 19 and a slave controller 18;
a receiving device 16, which is a coil wound with litz wire and converts the induced high-frequency alternating magnetic field emitted by the emitting device 15 into high-frequency alternating current;
the first topology compensation circuit 17 is arranged between the charging relay 21, the impedance measuring relay 20 and the receiving device 16, and is used for reducing the leakage inductance of the receiving device 16 and improving the transmission efficiency of energy, and the compensation structure can take various forms such as S/S, LS, PS, PP, LCC and the like.
The impedance measuring relay 20 is connected between the receiving device 16 and the plurality of battery module end control switches, and the on/off of the impedance measuring relay 20 and the on/off of the specific battery module selection switch determine whether to measure the impedance for the specific battery module.
The on/off of the charging relay 21 and the on/off of the specific battery module selection switch determine whether to charge the specific battery module.
The charging relay 21 is connected in series with the first rectifying filter 22 and then connected in parallel with the impedance measuring relay 20, the first end after the parallel connection is connected with the receiving coil 16, and the second end after the parallel connection is connected with a plurality of battery module selection switches Q1, Q2, Q3 and Q4 … … Qn;
preferably, a first topology compensation circuit is arranged between the first end and the receiving coil 16;
the first rectifying filter 22 is connected between the charging relay 21 and the plurality of battery module end control switches, and converts the high-frequency alternating current induced by the receiving device 16 into direct current;
the battery module selection switches Q1, Q2, Q3 and Q4 … … Qn correspond to the battery modules one by one, and each battery module selection switch is connected with one battery module respectively to control whether each battery module is disconnected/closed with the impedance measurement relay 20 or the charging relay 21, namely whether impedance measurement or charging is carried out.
The slave controller controls the on-off of the impedance measuring relay 20 and the charging relay 21, controls the on-off of a plurality of battery module selection switches Q1, Q2, Q3 and Q4 … … Qn, and further controls and executes charging and/or impedance measurement.
The first wireless transceiver 19 is connected with the slave controller 18, the second transceiver 11 is connected with the master controller 10, and the first wireless transceiver 19 and the second transceiver 11 perform wireless communication data transmission to exchange battery voltage, current, temperature, impedance information measured in real time, or updated SOC and SOH.
As shown in fig. 2, preferably, the present invention may further include a heating relay 24, the heating relay 24 is connected between the receiving device 16 and the plurality of battery module end control switches, the impedance measuring relay is connected in parallel with the heating relay, and the controller controls the on/off of the heating relay 24 and the on/off of the specific battery module selection switch to determine whether to heat the specific battery module.
The receiving device 16 induces the high-frequency alternating magnetic field to generate high-frequency alternating current, the optimal heating current frequency and the optimal heating current power are applied to two ends of the battery module to be heated through the heating relay 24, high-frequency excitation charging or discharging is carried out on the battery module, and the battery module to be heated is rapidly heated.
Preferably, the heating current frequency and the heating current power are controlled by controlling the state of the high-frequency alternating magnetic field emitted by the emitting device through the inverter 13.
Preferably, the master controller exchanges the measured impedance value of the specific battery module with the slave controller, updates the optimal heating current frequency and the optimal heating current power of the specific battery module according to the impedance value of the specific battery module, and controls the state of the high-frequency alternating magnetic field emitted by the emitting device to realize heating at the optimal heating current frequency and the optimal heating current power.
The operating principles of the impedance measurement, the charging section and the low temperature heating are described below:
a. charging of electricity
The charging relay is closed from the controller, the battery module selection switch needing to be charged is opened, the transmitting device generates a high-frequency alternating magnetic field, the receiving device induces the high-frequency alternating magnetic field to generate high-frequency alternating current, and the high-frequency alternating current is converted into direct current through the charging relay and the rectifying filter and is loaded to two ends of the battery module needing to be charged, so that the function of charging the battery is achieved.
b. Impedance measurement
The controller closes the impedance measuring relay, opens the battery module selection switch needing to measure impedance, the transmitting device generates an alternating magnetic field at corresponding frequency, the receiving device induces the alternating magnetic field to generate excitation current with certain frequency and power, the excitation current is applied to two ends of the battery module needing to measure impedance through the impedance measuring relay, and the impedance of the battery module is calculated by using the measured state information of the battery module.
The method of calculating the power cell impedance information is not limited to the following method.
Measuring information such as voltage, current, phase difference and the like of the battery pack, carrying out Fourier transform on the current and the voltage, and calculating the impedance of the battery module, wherein the formula for calculating the alternating current impedance is as follows:
I＝Iin
wherein, IinFor input of alternating excitation currents of different frequencies, VrIs the real part, V, of the voltage of the battery module under test at different frequenciesjFor the imaginary part, I, of the voltage of the battery module under test at different frequenciesrFor real part, I, of the current of the battery module under test at different frequenciesjFor the imaginary part, Z, of the current of the battery module under test at different frequenciesrFor being measured at different frequenciesReal part of battery module impedance, ZjThe imaginary part of the impedance of the battery module to be tested under different frequencies.
c. Heating of
The heating relay is closed from the controller, a battery module selection switch needing to be heated is opened, the transmitting device generates a high-frequency alternating magnetic field, the receiving device induces the high-frequency alternating magnetic field to generate high-frequency alternating current, the high-frequency alternating current is applied to two ends of a battery module needing to be heated through the heating relay, when the alternating current with certain frequency is loaded to two ends of the battery, the battery module is subjected to high-frequency excitation charging or discharging, and the temperature of the battery module needing to be heated is rapidly increased.
Claims (9)
1. A non-contact power battery impedance measuring and charging device,
the parking device comprises a vehicle-mounted end arranged on a vehicle and a parking space end arranged on a parking space;
the parking space end comprises a transmitting device, an external power supply and a main controller; the transmitting device generates a high-frequency alternating magnetic field;
the vehicle-mounted end comprises a charging relay, a first rectifying filter, a plurality of battery modules, a receiving device and a slave controller;
the receiving device converts the induced high-frequency alternating magnetic field emitted by the transmitting device into high-frequency alternating current;
the battery module selection switches correspond to the battery modules one by one;
the vehicle-mounted end also comprises an impedance measuring relay;
the charging relay is connected with the first rectifying filter in series and then connected with the impedance measuring relay in parallel, the first end after the parallel connection is connected with the receiving device, and the second end after the parallel connection is connected with each battery module selection switch;
and closing the impedance measuring relay, closing a battery module selection switch corresponding to the battery module needing to measure the impedance, inducing the high-frequency alternating magnetic field by the receiving device to generate excitation current, applying the excitation current to two ends of the battery module needing to measure the impedance through the impedance measuring relay, and calculating the impedance value of the battery module needing to measure the impedance by using the state information of the battery module needing to measure the impedance.
2. The apparatus of claim 1, wherein: and the master controller and the slave controller exchange the measured impedance value of the battery module in a communication way, and the optimal charging current and the optimal charging voltage of the battery module are updated according to the impedance value.
3. The apparatus of claim 1 or 2, wherein: the vehicle-mounted end also comprises a heating relay; and the impedance measuring relay is connected with the heating relay in parallel, and the on-off of the heating relay and the on-off of the specific battery module selection switch determine whether the specific battery module is heated or not.
4. The apparatus of claim 3, wherein: the main controller and the slave controller are communicated to exchange the measured impedance value of the battery module, the optimal heating current frequency and the heating current power of the battery module are updated according to the impedance value, the state of the high-frequency alternating magnetic field emitted by the emitting device is controlled, and heating with the optimal heating current frequency and the optimal heating current power is realized.
5. The apparatus of claim 3, wherein: the receiving device induces the high-frequency alternating magnetic field to generate high-frequency alternating current, optimal heating current frequency and heating current power are applied to two ends of the battery module to be heated through the heating relay, high-frequency excitation charging or discharging is carried out on the battery module, and the battery module to be heated is rapidly heated.
6. The apparatus of claim 1 or 2, wherein: and updating the SOC or SOH of the power battery according to the measured battery impedance value.
7. The apparatus of claim 1, wherein: the high-frequency alternating current is converted into direct current through the charging relay and the rectifying filter, and the direct current is loaded to two ends of the battery module needing to be charged, so that the non-contact charging of the battery module is realized.
8. The apparatus of claim 1 or 2, wherein: the first topology compensation circuit is arranged among the charging relay, the impedance measuring relay and the receiving device and used for reducing the leakage inductance of the receiving device and improving the transmission efficiency of energy.
9. The apparatus of claim 1 or 2, wherein: the inverter is arranged between the transmitting device and the second rectifying and filtering circuit; for converting the rectified and filtered direct current into a high-frequency alternating current.
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| CN111650525B (en) * | 2020-05-11 | 2022-09-30 | 摩登汽车(盐城)有限公司 | Battery management system with battery impedance measurement and impedance measurement method thereof |
| CN112104034B (en) * | 2020-09-14 | 2023-04-07 | 北京理工大学 | Non-contact power battery charging, heating and balancing device |
| CN112104039B (en) * | 2020-09-14 | 2022-05-27 | 北京理工大学 | Non-contact power battery charging and balancing device |
| CN112104036B (en) * | 2020-09-14 | 2022-06-28 | 北京理工大学 | Non-contact power battery charging and dissipation balancing device |
| CN112421716B (en) * | 2020-11-09 | 2022-08-19 | 西南交通大学 | Battery pack equalization control circuit and method based on wireless charger |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315995A (en) * | 2007-05-29 | 2008-12-03 | 联想（新加坡）私人有限公司 | Battery set, device and charge control method |
| CN106379190A (en) * | 2016-11-03 | 2017-02-08 | 中国科学院电工研究所 | Load-adaptive electric vehicle wireless charging system |
| CN107666028A (en) * | 2017-08-16 | 2018-02-06 | 同济大学 | A kind of lithium ion battery for electric vehicle low temperature exchanges heater |
| CN108092368A (en) * | 2018-01-29 | 2018-05-29 | 东莞市仲康电子科技有限公司 | A kind of method and apparatus of microprocessor processes automobile multifunctional charger data |
| CN109774504A (en) * | 2019-01-23 | 2019-05-21 | 重庆长安新能源汽车科技有限公司 | Wireless charging system and electric car wireless charging method |
| CN110554327A (en) * | 2019-08-12 | 2019-12-10 | 同济大学 | Method for rapidly measuring impedance of storage battery during charging |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779652B (en) * | 2014-01-09 | 2017-01-25 | 同济大学 | Power battery charger by using AC charging and discharging for quick preheating |
| JP6556841B2 (en) * | 2015-07-10 | 2019-08-07 | 株式会社東芝 | Internal resistance deriving device, storage battery device, and internal resistance value deriving method |
| CN107171041B (en) * | 2017-06-12 | 2019-02-12 | 北京理工大学 | A kind of power battery alternating current time-dependent current echelon heating means |
| CN207968022U (en) * | 2018-03-27 | 2018-10-12 | 浙江衡远新能源科技有限公司 | A kind of power battery having intelligent charge pattern |
-
2020
- 2020-01-02 CN CN202010001643.3A patent/CN111123133B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315995A (en) * | 2007-05-29 | 2008-12-03 | 联想（新加坡）私人有限公司 | Battery set, device and charge control method |
| CN106379190A (en) * | 2016-11-03 | 2017-02-08 | 中国科学院电工研究所 | Load-adaptive electric vehicle wireless charging system |
| CN107666028A (en) * | 2017-08-16 | 2018-02-06 | 同济大学 | A kind of lithium ion battery for electric vehicle low temperature exchanges heater |
| CN108092368A (en) * | 2018-01-29 | 2018-05-29 | 东莞市仲康电子科技有限公司 | A kind of method and apparatus of microprocessor processes automobile multifunctional charger data |
| CN109774504A (en) * | 2019-01-23 | 2019-05-21 | 重庆长安新能源汽车科技有限公司 | Wireless charging system and electric car wireless charging method |
| CN110554327A (en) * | 2019-08-12 | 2019-12-10 | 同济大学 | Method for rapidly measuring impedance of storage battery during charging |
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